Category:Boleslaus IV, Duke of Warsaw

**Bolesław IV of Warsaw**
	Polish noble
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Date of birth	1421 (statement with Gregorian date earlier than 1584)
Date of death	10 September 1454; Opinogóra Górna
Place of burial	St. John's Archcathedral;
Country of citizenship	Poland;
Occupation	feudatory;
Family	Piast dynasty;
Father	Bolesław Januszowic;
Mother	Anna Fiodorówna;
Child	Konrad III Rudy (5); Casimir III of Płock (6); Bolesław V of Warsaw (7); Janusz II of Płock (8); Anna of Warsaw (9);
Spouse	Barbara Olelkówna;
Work location	Ciechanów; Czersk; Łomża; Warsaw;
Authority file
	Q2349138; VIAF ID: 317076728; GND ID: 1075932572; PLWABN ID: 9810550098405606
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